4. Electrical audio signal processing systems and devices
  5. Noise or distortion suppression
  6. Spectral adjustment

Li Zheng-Yi

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Wave-filtering device with an adjustable frequency bandwidth

Electrical audio signal processing systems and devices – Noise or distortion suppression – Spectral adjustment
Reexamination Certificate

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Wave-filtering device with an adjustable frequency bandwidth

Electrical audio signal processing systems and devices – Noise or distortion suppression – Spectral adjustment
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2384449

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